From 590b1d19d73914477cfd9faac7a0d7dcf5b4eb08 Mon Sep 17 00:00:00 2001 From: Alexandre Belloni Date: Tue, 16 Jan 2024 00:22:13 +0100 Subject: rtc: max31335: remove unecessary locking There is no race condition when accessing MAX31335_STATUS1 because it is always about clearing the alarm interrupt bit. Reviewed-by: Antoniu Miclaus Link: https://lore.kernel.org/r/20240115232215.273374-1-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni --- drivers/rtc/rtc-max31335.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) (limited to 'drivers/rtc/rtc-max31335.c') diff --git a/drivers/rtc/rtc-max31335.c b/drivers/rtc/rtc-max31335.c index 3ddfe71bbb56..2ce23f60a7f3 100644 --- a/drivers/rtc/rtc-max31335.c +++ b/drivers/rtc/rtc-max31335.c @@ -348,27 +348,19 @@ static int max31335_alarm_irq_enable(struct device *dev, unsigned int enabled) static irqreturn_t max31335_handle_irq(int irq, void *dev_id) { struct max31335_data *max31335 = dev_id; - struct mutex *lock = &max31335->rtc->ops_lock; int ret, status; - mutex_lock(lock); - ret = regmap_read(max31335->regmap, MAX31335_STATUS1, &status); if (ret) - goto exit; + return IRQ_HANDLED; if (FIELD_GET(MAX31335_STATUS1_A1F, status)) { - ret = regmap_update_bits(max31335->regmap, MAX31335_STATUS1, - MAX31335_STATUS1_A1F, 0); - if (ret) - goto exit; + regmap_update_bits(max31335->regmap, MAX31335_STATUS1, + MAX31335_STATUS1_A1F, 0); rtc_update_irq(max31335->rtc, 1, RTC_AF | RTC_IRQF); } -exit: - mutex_unlock(lock); - return IRQ_HANDLED; } -- cgit v1.2.3-70-g09d2